 |
|||
|
Page Title:
Transfer case (models 4x4 and 6x6) |
|
||
| ||||||||||
|
|  MIL-T-62110G
TABLE V. Vehicle forward speeds.
Vehicle model
No. of forward speeds
8
4x2
9
4x4
9
6x4
9
6x6
*
3.4.5.3 Transfer case (models 4x4 and 6x6). Model 4x4 and 6x6 shall be provided with
a transfer case. Unless the transfer case is equipped with devices which compensate for
differential torque and speeds between the front and rear axles, the transfer case shall provide for
driver selection of either two-wheel, four-wheel, or six-wheel drive, as applicable. When
interaxle compensating devices are furnished, they shall provide for the positive transfer of
power to all driving axles. When a two-speed transfer case is furnished, the speedometer shall
read accurate speed (mph) with the speed selector in high or low range.
3.4.5.4 Clutch. The clutch shall be largest capacity clutch offered for the type, class, and
model vehicle and engine furnished, with the clutch torque capacity exceeding the maximum
delivered engine torque.
*
3.4.5.5 Automatic or semiautomatic transmission. When specified (see 6.2), the vehicle
shall be provided with an automatic or semiautomatic transmission. The transmission shall
include a hydraulic torque converter and not less than four forward gear ratios for class A and
five forward gear ratios for class B and C. Normal driving range selector position shall provide
not less than four gear ratios without movement of the selector. The transmission shall be
provided with an SAE J704 power takeoff opening. The net torque capacity and the net power
rating of the transmission shall exceed the output ratings of the engine.
3.4.5.6 Power takeoff. A power takeoff shall be furnished, and shall be of a rated
capacity to operate powered equipment. Controls to operate the power takeoff shall be located in
the truck cab accessible to the seated driver. A caution plate or decal reading "DO NOT
OPERATE VEHICLE AT HIGHWAY SPEEDS WITH POWER TAKEOFF ENGAGED" shall
be installed so as to be readily visible to the seated driver.
3.4.6 Driveline components. The driveline components shall be adequate to transmit the
maximum delivered torque of the engine, as developed through the maximum gear train
reduction, in proportion to the number of driving axles furnished.
3.4.7 Frame. The chassis frame shall be the manufacturer's standard for the type and
class of vehicle furnished. The vehicle shall have a frame with the reinforcement extending at
least from the rear of the front suspension rear hanger bracket to the front of the rear spring front
hanger bracket on model 4x2 and model 4x4 vehicles, and to the bogie trunnion mounting
18
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals